HP Probook 6450b bios problems

Just cleaned my laptops memorys and reinstalled windows on it. Everythig is working fine out the fact that I cant connect to internet with wire or wireless connection. I think it's the bios that are missing but I'm not sure (I'm reallly sucky with comupters) I've tried to install some bios/drivers from HP website but without success. So here I am with empty hands and an empty computer that I can't do jack**bleep** with asking for help.

Thanks for taking your time for reading and I would be forever greatfull for some help.